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CVE-2025-69196

6.5 · MEDIUM

FastMCP is the standard framework for building MCP applications.

Published Mar 16, 2026CWE-863EPSS 0.37%

Overview

CVE-2025-69196 is a medium-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

FastMCP is the standard framework for building MCP applications. Prior to version 2.14.2, the server does not properly respect the resource parameter submitted by the client in the authorization and token request. Instead of issuing the token explicitly for the MCP server, the token is issued for the base_url passed to the OAuthProxy during initialization. This issue has been patched 2.14.2.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/PrefectHQ/fastmcp/security/advisories/GHSA-5h2m-4q8j-pqpjRefaccess.redhat.com/errata/RHSA-2026:36350Refaccess.redhat.com/security/cve/CVE-2025-69196Refbugzilla.redhat.com/show_bug.cgi?id=2448179Refsecurity.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-69196.json

How CyberStrike helps

Frequently asked questions

What is CVE-2025-69196?

CVE-2025-69196 is a medium-severity vulnerability. It was published on March 16, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-69196?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-69196?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-69196?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-69196 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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